/Engine/Source/Runtime/UMG/Public/Blueprint/UserWidget.h
virtual bool NativeOnDragOver ( const [FGeometry](API\Runtime\SlateCore\Layout\FGeometry) & InGeometry, const [FDragDropEvent](API\Runtime\SlateCore\Input\FDragDropEvent) & InDragDropEvent, [UDragDropOperation](API\Runtime\UMG\Blueprint\UDragDropOperation) * InOperation )